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104268,878, Patented DeAIz. 1882.

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y I IINITED STATES PATENT i EEIcE.

CYPRIEN M. TESSIE DU MOTAY, OF PARIS, FRANCE, AND EDVARD STERN,

OF NEW YORK, N. Y., (BENJAMIN F. LEE, OF NEW YORK, N. Y., ADMINIS-TRATOR OF SAID DU MOTAY, DECEASED) SAID STERN-ASSIGNOR TO BENJAMIN F.LEE, OF NEW YORK, N. Y., ANCILLARY ADMINISTRATOR OF SAID DU MOTAY,DECEASED.

IRQCESS OFAND APPARATUS FOR DISTRIBUTING LIQUID FUEL IN CITIES.

SPECIFICATION forming part of Letters Patent No. 268,878, dated December12, 1882,

Application filed May 26, 1880. (No model.)

To alt whom tt may concern:

Be it known that we, CYPRIEN MARIE TEssIE DU MOTAY, ot' the city ofParis, Republic of France, aiesident of New York, and ED- 5 WARDSTERN,of the city, county, and State ot' New York, have invented a new anduseful Process of and Apparatus for Distributing Liquid Fuel in Cities,ot' which the following is a full, true, and exact description,reference io being had to the accompanying drawings.

The object of our inventionis to provide suitable apparatus to carry toevery customer in a city a liquid fuel; and it consists generally `inconnecting dwelling-houses or other buildings with a double system ofpipes,in one of which petroleum is conveyed, and the other of which maycontain compressed air or water, as may :be desired, as fully describedhereinalter.

OurV invention will be clearly understood zo from the accompanyingdrawings, in which similar letters refer to similar parts.

Figurel represents generally a view of the central station,designed totake the place of the presentcumbrousand eXpensivegas-works. A

z 5 represents boilerssupplying steam to a suitable engine,B,operating ablower, C. This blower forces'a su ppl y oi' air into the holder D, from`which it passes by the pipe d to the consumer. T represents an elevatedoil-tank supplied by 3o the pump P from the lower tank, R. This tankcommunicates by means of thepipe t with the consumer. The two pipes tand d are preferably arranged as twin pipes, as shown, thereby avoidingthe necessity of laying two mains. These pipes may be provided atsuitable intervals with automatically closing valves, which will allowthe gradual flow of the air or liquid past them, but will close shouldan escape or leak occur.

Fig. 2 representsan arrangement which ma be used at the consumersstation. The pipes d and t are the same as before. c represents one ofthe automatically-closing valves above referred to. The oil lowing in bythe pipe t passes to meter lm, Fig. 2, and thence to vessel n, whichacts as a carburetor, as will presently be explained. The petroleum ornaphtha entering` this vessel, which is made double,

should preferably the house.

into these sheets of felt, which, acting as siphons, cause it to flowdown on the other side.

between,compressioii-blocks h, which maybe adjusted by means of a screw.p represents a pipe, which may lead to the kitchen or other place wherecombustion is desired, or to a gas, burner. The air entering bythe piped passes into the double vesseliz above the body of petroleum k, and soaround among the sheets of felt and past the partition r to the pipe p.passage it absorbs from the felt the necessary amount of carburetingmaterial, and so passes to the place of consumption. The amount ofpetroleum which will be siphoned by sheets g g gis determined by thecompression-blocks. Onlythe heavier oils ot' petroleum will be found inthe lower part, g, of the chamber a below the compression-blocks, and itVis important that this be drawn ott and, if not too dense,

returned to the general circulation. This may be done iu many ways. Bythe one shown a tilting lever, l, is operated by a water-balance, a,which controls a pump, b, suitably arranged with check-Valyes. Acontinual current of Water is allowed to flow into the bucket c, andwhen sufcientlias accumulated its weight will cause the pump b tooperate, thereby forcing the bodyot' heavy oil which it contains intothe general circulating-pipe t ata pointoutside of the house. When thestroke has been completed the bucket c is causedto tip, the Waterescapes, and a countenbalance, c, raises the plunger and fills thecylinder again with the heavier oil. The oil in the vessel n may beheated by hot water, taken from the boiler of the house, passing throughthe chamber fw.

"The full details of the automatic pump apparatus b are not given, sincethey will be readily supplied by any intelligent mechanic.

The pipe e may be used also to supply air for ventilation of a house;but in this case the air be iiltered before it enters In this bustiblegas, of low illuminating-power.

By the means shown the carburetors of'the consumers are au tornaticallypurged, and theoil which has given off its more volatile constituentsincreases gradually in density. When it reaches a certain point ofdensity, so that it cannot properly be carried directly into thecirculation,this oil is collected either at a main station or at astation placed in some other locality and there distilled. The lighteroils, after being condensed, are then returned to the generalcirculation, while the heavier products are used either to give light tooil-lamps or as a fuel for 'the steam-boiler at the main station orelsewhere. By-this means all the oil is utilized without waste.Different manufacturies, likewise, which require a low-pressureair-blast, may be supplied from the general circulation d at almost anominal cost. If it should be desired for heating or illuminatingpurposes, the air circulation could be replaced by waterlgas, or anyother cheap comln case a very high illuminating-power should be desired,oxygen gas could be taken instead of air; but in that case it would benecessary to conduct the gas direct to the burner a through, say, apipe, e', and cause the stream ot' oxygen gas to impinge on the oil atthe burning-point. rThis could be done byl having at each chaudelier asmall oil-reservoir with an automatic valve, which would keep itsupplied with oil at a constant level, and would he connect-ed to thedifferent burners of the chandelier.' By this method of heating thewasting of fuel is diminished to a minimum, because it is only used whenactually needed,and theoil is turned ott' the moment the object isaccomplished, Neither smoke, dust, nor ashes, to any material extent,results from this method of utilizing fuel.

A modification of the above systemisshown in Figs. 3 and 4. It andTrepresent the naphtha-tanks, as before. P and P are two pumps suitablyoperated by steam, one of which forces naphtha into the elevated tank T,the other of which forces water into the elevated tank W. From this tankthe water flows through the twin pipe w to the consumer. The arrangementof the apparatus at the consumers sta'- tiou is shown in Fig. 4. Thewater-power arriving by the pipe w acts upon a small turbine, whichoperates a blower, M, which tills au air-tank, N. This air-tank issuitably connected with a Valve, V, so that when it is filled thc wateris shut off from the turbine. By this means compressed air is suppliedat the dwelling to the carburetor n by means ot' waterpower sent throughthe mains; or if the waterpower can be obtained from the water-works thewater-pipe w may be dispensed with. The rest of the apparatus operatesas before. Where water-power may be obtained at the dwelling oxygen maybe supplied to the burners from the main, and a turbine worked on thepremises may operate a blower, from which air is conveyed to thecarburetor and to each burner, the oxygen impinging on the carburetedair resulting in abrilliaut flame.

We do not here claim distributing oil from a central supply and burningit in connection with oxygen or its equivalent conducted to the burners,nor the use of oxygen toiucrease the illuminating. and heating powerofthe gas., as these may form the subjects of a separate application forLetters Patent.

What wevclaim as our invention, and desire to secure by Letters Patent,is-

1. In combination with a central reservoir and a series ofdistributing-pipes conveying liquid fuel to the different houses of acity or town, apparatus arranged in the different houses for vaporizingeach a portion of said liquid fuel, and a pump and pipes for returningthe heavier portions of said fuel to the general circulation,substantially as set forth.

2. The combination, in a town heating and lighting system, of a centralreservoir of liquid fuel, a double series of pipes, one of whichsupplies the liquid fuel to the different consumers of the town, and theother of which supplies compressed air or gas, and carburetyors at thedifferent places to be heated or lighted, constructed to ca rburet thecompressed air so delivered by means ofthe liquid fuel delivered by thefuel-supply pipes, substantially as described.

3. The method of supplying heating or illuminating gas to consumers in acity or town, herein described, which consists in supplying to eachhouse the fuel in a liquid condition from a central source, and thencarbureting air delivered in each house by said fuel, substantially asdescribed.

U. M. TESSI DU MOTAY. E. STERN. Witnesses:

S. F. SULLIVAN, W M. A. PoLLocK.

IOO

